Table 1. Definitions of comorbidities included in the HCT-CI

*One or more vessel-coronary artery stenosis requiring medical treatment, stent, or bypass graft.


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Document Owner:	Sean Macpherson (see Who's Who)
Last Reviewed:	January 2019
Next Review:	January 2022
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Note: Only the electronic version is controlled. Once printed, this is no longer a controlled document. Disclaimer The Haematology Department Protocols and Guidelines (the Red Book) are intended as a guide for registered health professionals to communicate guidelines and share best practices with supporting health professionals within New Zealand district health boards. They are not intended to be provided to or used as a reference for patients or non-registered health professionals. All health professionals must exercise their own clinical judgement and use pertinent clinical data when treating patients. The authors and editors of this publication have checked with sources believed to be reliable in their effort to provide information that is complete and in accord with the standards accepted at the time of publication. However, in view of the possibility of human error or changes in medical science, neither the authors, editors, publisher, nor any other party who has been involved in preparing or publishing this work warrants that the information contained in it is accurate or complete in every respect. They therefore have no liability (whether in tort (including negligence) or otherwise) for any loss or damage arising out of any reliance on this information. This publication has been compiled by the staff and contractors of Canterbury District Health Board (CDHB) and as such CDHB has copyright for this book. Amendments must be authorised in accordance with the documented process. No release of part of, or all of, this publication to any other party or organisation is permissible without the prior approval of the designated document owner.
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Comorbidity	Definitions of comorbidities included in the new HCT-CI	HCT-CI weighted scores
Arrhythmia	Atrial fibrillation or flutter, sick sinus syndrome, or ventricular arrhythmias	1
Cardiac	Coronary artery disease*, congestive heart failure, myocardial infarction, or EF ≤ 50%	1
Inflammatory bowel disease	Crohns disease or ulcerative colitis	1
Diabetes	Requiring treatment with insulin or oral hypoglycemics but not diet alone	1
Cerebrovascular disease	Transient ischemic attack or cerebrovascular accident	1
Psychiatric disturbance	Depression or anxiety requiring psychiatric consult or treatment	1
Hepatic, mild	Chronic hepatitis, bilirubin > ULN to 1.5 x ULN, or AST/ALT > ULN to 2.5 x ULN	1
Obesity	Patients with a body mass index > 35 kg/m²	1
Infection	Requiring continuation of antimicrobial treatment after day 0	1
Rheumatologic	SLE, RA, polymyositis, mixed CTD, or polymyalgia rheumatica	2
Peptic ulcer	Requiring treatment	2
Moderate/severe renal	Serum creatinine > 2 mg/dL, on dialysis, or prior renal transplantation	2
Moderate pulmonary	DLco and/or FEV₁ 66%-80% or dyspnea on slight activity	2
Prior solid tumor	Treated at any time point in the patient's past history, excluding nonmelanoma skin cancer	3
Heart valve disease	Except mitral valve prolapse	3
Severe pulmonary	DLco and/or FEV₁ ≤ 65% or dyspnea at rest or requiring oxygen	3
Moderate/severe hepatic	Liver cirrhosis, bilirubin > 1.5 x ULN, or AST/ALT > 2.5 x ULN	3